CN105008129A - Film composition for paper thermal lamination - Google Patents
Film composition for paper thermal lamination Download PDFInfo
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- CN105008129A CN105008129A CN201380074211.3A CN201380074211A CN105008129A CN 105008129 A CN105008129 A CN 105008129A CN 201380074211 A CN201380074211 A CN 201380074211A CN 105008129 A CN105008129 A CN 105008129A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/75—Printability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2310/00—Treatment by energy or chemical effects
- B32B2310/14—Corona, ionisation, electrical discharge, plasma treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
Landscapes
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
Provided is a multilayer film comprising a skin layer comprising an anhydride and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymer having a melting point in the range of from 50 to 89 DEG C, wherein the anhydride and/or carboxylic acid is present in an amount of from 0.02 to 0.3 percent by weight of the polyethylene based resin. The multilayer film further comprises a substrate layer comprising a resin selected from the group consisting of polypropylene or polyethylene terephthalate.
Description
Technical field
The present invention relates to multilayer film, described multilayer film is particularly suitable for thermosphere and is incorporated in paper substrates.
Background technology
High-quality paper is applied, and such as books, magazine edging carton, shopping bag etc., typically comprise the polymer film being adhered to paper stock.The application of these high-quality paper needs the attributes such as such as surfacecti proteon, waterproof, mechanical strength and high surface gloss usually.These attributes can be provided by well-known polymer, such as bi-oriented polypropylene (biaxially orientedpolypropylene; " BOPP ") or biaxially oriented PET (biaxially orientedpolyethylene terephthalate; " BOPET "), but these polymer Typical ground can not adhere on paper stock well.Therefore, more complicated membrane structure has been used in these application.
At present, selected membrane structure comprises the ethylene vinyl acetate polymer layer (" EVA ") adhering to substrate (such as BOPP or BOPET).BOPP or the BOPET membrane structure of EVA Extrusion coating is laminated on paper stock with hot mode have been had for many years.EVA coating layer thickness generally at 5 microns in 50 micrometer ranges.Usual use vinyl acetate content is in 18 percentage by weights to 20 weight percentage ranges and melt index (190 DEG C, 2.16 kilograms) EVA within the scope of 14 grams/10 minutes to 20 grams/10 minutes, described EVA has 75 DEG C to the fusing point within the scope of 85 DEG C.The combination of the low melting point obtained by vinyl acetate groups and intrinsic polarity makes the film of EVA Extrusion coating have extraordinary paper adherence and low laminated initial temperature, so that more effective processing.But EVA has propensity for degradation between processing period, cause the problems such as such as film gel, flavescence, smell.In order to avoid degraded, the processing temperature of EVA must keep below 250 DEG C.Meanwhile, typically negative impact will be had for the production of the whole world shortage autoclave reactor of EVA on the utilizability of these resins in this prolonged application.
Another kind of techniques available polymer film adhered on paper be by a step co-extrusion stenter sequentially directional process functional top layer is incorporated to substrate (such as BOPP).This technology is described in below with reference in document CN100534787C, CN100566994C and WO2008092328 (A1).The general teaching of these bibliography wherein functional top layer comprises the BOPP film structure of at least two kinds of components.First component can be Unit 10 % by weight-30 % by weight derived from the ethylene-butene copolymer of butylene, Unit 5 % by weight-20 % by weight derived from the ethylene-octene copolymer of octene, or Unit 1 % by weight-30 % by weight derived from butylene and Unit 1 % by weight-20 % by weight derived from the Ethylene/Butylene-octene terpolymer of octene.Second component is the maleic anhydride graft form of the first component, and wherein the amount of maleic anhydride graft is 0.5 % by weight-2 % by weight.
In these references, 20 % by weight upper limits of octene content represent that density range is 0.895 gram/cc or larger, which also limits the density of advocated MAH-g resin.According to this octene % claim, the DSC fusing point of the E-O resin of advocating and their MAH Grafted Derivatives is not less than 95 DEG C.Therefore, compared with the film of EVA Extrusion coating mentioned above, wherein functional top layer comprise this high-melting-point PE and MAH graft type PE resin advocate that BOPP film will have lower adhesion strength and the laminated temperature of Geng Gao.
Summary of the invention
Therefore, replacement scheme is sought by paper supplier or manufacturer.The present invention relates to a kind of multilayer film, described multilayer film to comprise containing fusing point at 50 DEG C to the top layer through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers within the scope of 89 DEG C, and wherein said acid anhydrides and/or carboxylic acid exist with the amount of 0.02 percentage by weight of polythylene resin to 0.3 percentage by weight.Described multilayer film comprises the substrate layer containing the resin being selected from the group be made up of polypropylene or PET further.
Film of the present invention has and comprises fusing point lower than the functional top layer of the resin of 90 DEG C and can obtain the paper adhesion strength higher than technology disclosed in above-mentioned field and lower laminated temperature.
Film composition of the present invention allows film to realize good paper adherence when applied laminated temperature is lower, thus realizes laminated linear velocity fast.
Accompanying drawing explanation
Fig. 1 shows the figure that in the given instance presented at this description, adhesion strength becomes with laminated temperature.
Detailed description of the invention
As used in this, term " composition " comprises the mixture of the material forming composition and the product Sum decomposition product that formed by the material of composition.
As used in this, term " polymer " " refer to by the polymer compound prepared by the monomer polymerization of identical or different type.Therefore, general term polymerization thing contain term homopolymers (be used in reference to the polymer only prepared by a kind of monomer type, should understand in polymer architecture and can be incorporated to trace impurity), as hereafter the term copolymer that defines and interpretation.
As used in this, term " interpretation " refers to by the polymer prepared by least two kinds of dissimilar monomer polymerizations.The polymer that therefore generic term interpretation comprises copolymer (being used in reference to the polymer prepared by two kinds of dissimilar monomers) and prepared by the monomer dissimilar more than two kinds.
As used in this, term " polyvinyls " refers to and comprises the vinyl monomer (with polymer weight) of primary amount with polymerized form and optionally can comprise the polymer of one or more comonomer.
As used in this, term " ethylene/alpha-olefin interpolymers " refer to polymerized form comprise account for primary amount vinyl monomer (with interpretation weighing scale) and the interpretation of one or more other 'alpha '-olefin monomers.Term " ethylene/alpha-olefin interpolymers " comprises ethylene/alpha-olefin copolymer and derived from the terpolymer of various of monomer and other polymer.
As used in this, term " ethylene/alpha-olefin copolymer " refers to and comprises the vinyl monomer (using copolymer weighing scale) of primary amount and the alpha-olefin copolymer as unique two kinds of monomer types with polymerized form.
As used in this, term " EVOH " refers to the polymer of the repetitive comprising ethene and vinyl alcohol.Known to general in affiliated field, the weight ratio of ethene and vinyl alcohol defines barrier characteristics.This base polymer is generally known in the art with their manufacture method.
The existence that term " comprises ", " comprising ", " having " and their derivative words do not intend to get rid of any additional component, step or program, no matter whether they disclose particularly.In order to avoid any query, unless stated to the contrary, otherwise by using term " to comprise " all compositions of advocating and can comprise any extra additive, adjuvant or compound (no matter being polymerized or other form).By contrast, term " substantially by ... composition " is got rid of and is departed from other component any of any category enumerated subsequently, step or program, but for operability and except those components nonessential, step or program.Term " by ... composition " get rid of any component, step or the program that specifically do not define or enumerate.
Method of testing
Melt index
According to ASTM D-1238, under 190 DEG C/2.16 kilograms conditions, measure the melt index (I of polyvinyls
2, or MI).For high I
2polymer (I
2be more than or equal to 200 grams/mol), as the the 6th, 335, No. 410, the 6th, 054, No. 544, the 6th, described in 723, No. 810 United States Patent (USP)s, preferably utilize brookfield viscosity (Brookfield viscosity) to calculate melt index.I
2(190 DEG C/2.16 kilograms)=3.6126 [10 (log (η)-6.6928)/-1.1363]-9.31851, wherein η=melt viscosity (cP), 350 °F.
DSC
Differential Scanning Calorimetry measures (DSC) for measuring the degree of crystallinity of polyethylene (PE) class sample.Take about five milligrams to eight milligrams samples and be positioned in DSC dish.By lid dish on crimping to guarantee the atmosphere closed.For PE, sample disc is positioned in DSC cell, is then heated to the temperature of 180 DEG C with the speed of about 10 DEG C/min.Sample is made to keep three minutes at these temperatures.Then, for PE, with the speed of 10 DEG C/min, sample is cooled to-60 DEG C, and isothermal keeps three minutes at said temperatures.Then with the speed heated sample of 10 DEG C/min, until melting completely (second time heating).Degree of crystallinity % is by this quantity is multiplied by 100 calculates (such as PE, degree of crystallinity %=(Hf/292 joule/gram) × 100) divided by theoretical melting heat 292 joule/gram (for PE) by the melting heat (Hf) that measures according to second time heating curves.
Unless otherwise stated, utilize the above-mentioned second time heating curves available from DSC to measure the fusing point (Tm) of often kind of polymer.Crystallization temperature (T is measured according to first time cooling curve
c).
Density
According to ASTM D-792 density measurement.Measured density is " fast density ", and meaning described density is measure after one hour in molding time.
Maleic anhydride content-Fourier transform infrared spectrometry (Fourier Transform InfraredSpectroscopy; FTIR) analyze
Maleic anhydride concentration measures relative to the ratio of polymer reference peak (being in the case of polyethylene, under wave number 2019cm-1) according to the peak height of maleic anhydride under wave number 1791cm-1.Maleic anhydride content is by this ratio is multiplied by suitable calibration constants to calculate.Equation for maleic acid graft type polyolefin (reference peak polyethylene) has following form as expressed in equation 3.
MAH (% by weight)=A*{ [the FTIR peak area under 1791cm-1]/[the FTIR peak area under 2019cm-1]+B* [the FTIR peak area under 1712cm-1]/[FTIR peak area under 2019cm-1] } (equation 1)
C13NMR standard can be used to determine calibration constants A.Visual equipment and polymer and determine, actual alignment constant may be slightly different.Second component under 1712cm-1 wave number illustrates the existence of maleic acid, is insignificant for brand-new graft materials.But passing in time, maleic anhydride is deposited at moisture and is easily changed into maleic acid in case.Apparent surface is long-pending and determine, and at ambient conditions, only within several days, just remarkable hydrolysis can occur.Described acid has different peaks under 1712cm-1 wave number.Constant B in equation 1 is the extinction coefficient difference for correcting between acid anhydrides and acidic group.
Sample preparation procedure starts from compacting, and typically in hot press, at 150 DEG C at 180 DEG C, suppress one hour between two diaphragms, thickness is 0.05 millimeter to 0.15 millimeter.Mai La (Mylar) and Teflon (Teflon) be protection sample not compression plate destroy applicable diaphragm.Aluminium foil (maleic anhydride and reactive aluminum) must not be used.Pressing plate should maintain about five minutes under pressure (about 10 tons).Make sample cool to room temperature, be positioned in suitable specimen holder, and scan in FTIR subsequently.Background scans should be carried out before each Sample Scan or on demand.The accuracy of test is good, and intrinsic changeability is less than ± and 5%.Sample should store to prevent excessive hydrolysis together with drier.Measure moisture content in product up to 0.1 % by weight.But acid anhydrides is reversible to the conversion of acid at a certain temperature, but conversion may expend one week completely.Reverse best execution at 150 DEG C in vacuum drying oven; Need abundant vacuum (about 30 inches of Hg).If vacuum is not too enough, so sample tends to oxidation and produces infrared peak at about 1740cm-1, causes grafting angle value too low.Maleic anhydride and maleic acid are represented by the peak being positioned at about 1791cm-1 and 1712cm-1 respectively.
multilayer film
The present invention relates to a kind of multilayer film, described multilayer film to comprise containing fusing point at 50 DEG C to the top layer through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers within the scope of 89 DEG C, and wherein said acid anhydrides or carboxylic acid functional exist with the amount of 0.02 percentage by weight of polythylene resin to 0.3 percentage by weight.Described multilayer film comprises the substrate layer containing the resin being selected from the group be made up of polypropylene or PET further.
top layer
The top layer of film of the present invention comprises through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers.The fusing point of functionalized interpolymer at 50 DEG C within the scope of 89 DEG C, more preferably at 60 DEG C within the scope of 80 DEG C.
In another embodiment of the present invention, top layer is the blend of MAH functionalized interpolymer and ethylene/alpha-olefin interpolymers or other polymer.
Acid anhydrides or carboxylic acid functional are present in total top layer with 0.02 percentage by weight of polythylene resin to the amount of 0.3 percentage by weight, is preferably present in total top layer with the amount of 0.04 percentage by weight to 0.2 percentage by weight.Preferred alpha-olefin includes, but is not limited to C
3-C
20alpha-olefin, and preferred C
3-C
10alpha-olefin.Preferred alpha-olefin comprises propylene, 1-butylene, 1-amylene, 1-hexene, 1-heptene and 1-octene, and more preferably comprises propylene, 1-butylene, 1-hexene and 1-octene.Preferably, when comonomer be octene or hexene time, co-monomer content is 20 % by weight-40 % by weight, and when comonomer is butylene, co-monomer content is 15 % by weight-30 % by weight, and all the other are ethene preferably.
Acid anhydrides and/or carboxylic acid functionalized can be any material with acid anhydrides generally known in affiliated field or carboxylic acid functional.Maleic anhydride is a kind of for functionalized advantageous particularly material.
Similarly, preferably, through the melt index (I of acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers
2) or melt index (I
2) calculated value is more than or equal to 2 grams/10 minutes, 3 grams/10 minutes, 4 grams/10 minutes, 5 grams/10 minutes or even 6 grams/10 minutes.In one embodiment, through the melt index (I of acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers
2) or melt index (I
2) calculated value is less than or equal to 40 grams/10 minutes, be less than or equal to 35 grams/10 minutes further, and be further be less than or equal to 25 grams/10 minutes.
As by DSC measure, the percent crvstallinity through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers is advantageously less than or equal to 40%, is be less than or equal to 30% further, and is be less than or equal to 20% further.In one embodiment, as by DSC measure, the percent crvstallinity through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers is more than or equal to 2%, is be more than or equal to 5% further, and be more than or equal to 10% further.
In one embodiment, density through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers is more than or equal to 0.850 gram/cc, being be more than or equal to 0.855 gram/cc further, is be more than or equal to 0.860 gram/cc in addition further.In one embodiment, density through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers is less than or equal to 0.900 gram/cc, be be less than or equal to 0.895 gram/cc further, and be less than or equal to 0.890 gram/cc further.In one embodiment, density through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers is 0.855 gram/cc to 0.900 gram/cc, be 0.860 gram/cc to 0.895 gram/cc further, and be 0.865 gram/cc to 0.890 gram/cc further.
Top layer comprises 75 % by weight to 100 % by weight, preferably 5% to 30%, or 10% to 20% percentage by weight through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers.Also expect that top layer can comprise two or more as described herein through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers embodiment.Monofunctional ethylene/alpha-olefin can be comprised with one or more other material through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers blending, and such as EVA, EEA and/or as materials such as general known ionomers in affiliated field.
Be suitable for and do to supply the material through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers used in multilayer film top layer of the present invention to be PCT/CN12/076986 and U.S. Provisional Application 61/722, functionalized low molecular weight ethylene/alpha-olefin interpretation described in 274, each entirety in described document is incorporated to herein incorporated by reference.
Skin depth preferably at 3 microns in 50 micrometer ranges, more preferably at 4 microns in 12 micrometer ranges, and it is even furthermore preferable that at 10 microns in 30 micrometer ranges.
substrate layer
Multilayer film of the present invention comprises substrate layer further.Substrate layer comprises the resin being selected from the group be made up of polypropylene or PET.Substrate layer is preferably biaxially oriented to obtain high stiffness, high gloss and high-dimensional stability.The surface of these substrates can modification, to obtain some specific characteristic, as very high turbidity and pattern outward appearance.
If use polypropylene, then polypropylene preferably homo-polypropylene.
Preferably, resin used in substrate layer comprises 100% polypropylene or polyethylene terephthalate materials, but expection can be less than 25 % by weight, more preferably be less than other material of amount blending of 5%.Also expect that two or more different polypropylene as described herein or polyethylene terephthalate polymer can be used as substrate layer.
The thickness of substrate layer preferably at 10 microns in 50 micrometer ranges, more preferably at 10 microns in 20 micrometer ranges.
Additive can be contained, such as mineral oil or other plasticizer in substrate layer and/or top layer.In affiliated field, other generally known additive comprises following material, as inorganic filler, conductive filler, pigment, nucleator, fining agent, antioxidant, plumper, oxygen scavenger, fire retardant, ultra-violet absorber, processing aid (as zinc stearate), extrusion aids, slip additive, permeability modifier, antistatic additive, antiblocking additive and other thermoplastic polymer.
membrane structure
Film of the present invention can be the film be only made up of top layer and substrate layer, but they advantageously can contain additional layer.These additional layers can be positioned substrate layer either side.Can be advantageously used in an additional layer of the present invention is priming coat between substrate layer and top layer.This material becomes known for improving the adherence between substrate layer and top layer in described field.The other materials that can advantageously add comprises barrier layer, such as EVOH, and is selected from by other polymeric material of the following group formed: propylene quasi-plastic property body or elastomer, Noblen, MDPE, HDPE, LLDPE, LDPE or its blend.Additional layer advantageously can also comprise the polymeric material of the group being selected from the polymer (trade mark of nylon (Nylon)-E.I.Du Pont Company (DuPont)) that adopted name is polyamide.
The gross thickness of multilayer film of the present invention preferably at 10 microns in 100 micrometer ranges, more preferably at 15 microns in 50 micrometer ranges, more preferably at 18 microns in 30 micrometer ranges.
Film can use any technique generally known in affiliated field to be formed, and comprises blown film and builds film, and wherein indivedual layer can coextrusion.
For some application, receive much concern, after film forming step, film can along machine direction or transversal orientation, or along machine direction and transversal orientation.
Film of the present invention can advantageously be processed, such as, by sided corona treatment, flame treatment and plasma treatment, known to general in affiliated field.
Film of the present invention is particularly suitable for thermosphere and is incorporated in paper substrates.
Multi-layer film structure of the present invention can be blank or can advantageously be printed.In printed structure, generally preferably top layer of the present invention near printing-ink.
Polymer of the present invention, composition and method with and uses thereof described more fully by following instance.Following instance is to illustrate that object of the present invention provides, and should not be construed as and limit the scope of the invention.
Example
In test, the characteristic of resin used is listed in table 1.
Following resin is for the preparation of a series of film, and following layer is incorporated on paper stock, as detailed below.
Table 1. resin properties.
Extrusion coating test carries out on test manufacture line.This test manufacture traditional thread bindingly has four extruders and 5 layers of material feeding block.Wherein three extruders have the diameter of 25 mm dias, and one has 30 mm dias.Screw rod has the length of 25: 1 relative to natural scale.All extruders can operate independently and therefore, use only 30 mm dia extruders in this test.Resin is fed to the core layer in material feeding block by this extruder.The slit-type mould of 300 mm in width has clothes hanger geometry.Use the die gap of 0.7 millimeter.12 microns of chemical primary coat type BOPET substrates are by reeler, use controllable uncoiling tension force to carry out feed.Sided corona treatment in unequipped pipeline, therefore film is unprocessed.
In test, the characteristic of resin used is listed in table 1.
The test run design of coating is listed in table 2.Target coating calipers is set as 30 microns.
Table 2. coating formula designs
| Coating formula | |
| Comparative example 1 | 100% resin G |
| Comparative example 2 | 100% Resin A |
| Comparative example 3 | 70% resin C+20% resin E+10% resin F |
| Comparative example 4 | 80% resin D+20% resin E |
| Example 1 of the present invention | 80% Resin A+20% resin E |
| Example 2 of the present invention | 90% Resin A+10% resin E |
| Example 3 of the present invention | 70% resin B+20% resin E+10% resin F |
Paper hot laminating is that the roller laminator that manufactures in the chemical apparatuses company (ChemInstrument Inc.) being positioned at 2F510 laboratory, Tao Shi center, Shanghai (lab#2F510in Shanghai DowCenter) carries out.250 grams/m of (gsm) black printing brown paper are used to carry out hot laminating.
Key parameter is:
-laminated speed: 1.1 ms/min (mpm)
-clamping pressure: 0.38 MPa (MPa)
-laminated temperature: 70-110 degree Celsius, is spaced apart 10 degrees Celsius.
Each sample is laminated by nip rolls twice.
Before peeling off test, laminated sample is regulated 48 hours at ambient temperature.Peeling off test is carry out on stretching-machine, and wherein setting parameter is as follows:
-Sample Width: 15 millimeters
-separation mode: 180 degree of T-shaped strippings
-peeling rate: 300 mm/min
Steady section peeling force reports as paper adhesion strength (unit is newton/15 millimeter).
The result of paper adhesion strength to be summarized in table 3 and to be plotted in Fig. 1.
Table 3. paper adhesion strength
Surprisingly, fusing point lower than the polyolefin elastomer resin of 89 degrees Celsius and 10 % by weight-20 % by weight MAH graft type resins be combined in hot laminating temperature low when show high paper adhesion strength.As shown in Figure 1, the paper adhesion strength that example 1 of the present invention, example 2 and example 3 show at all research hot laminating temperature of 70-110 degree Celsius is higher than comparative example 1, and comparative example 1 is 100%NUC-3461.
The paper adhesion strength that comparative example 2 shows under all research laminated temperatures is lower than comparative example 1, this means there is no a small amount of MAH graft type resin in formula, linear polyolefin elastomer resin can not realize the paper adhesion strength high equally with EVA under research laminated temperature, even if its fusing point is lower than 80 degrees Celsius.
The paper adhesion strength that comparative example 3 and comparative example 4 show at 70 DEG C-100 DEG C is lower than comparative example 1, this means that fusing point can not realize the paper adhesion strength high equally with EVA, even if blending has MAH graft type resin in their formula higher than the polyolefin plastomers resin of 89 DEG C under research laminated temperature.
Fig. 1 shows three example film of the present invention (being labeled as " example 1 of the present invention ", " example 2 of the present invention " and " example 3 of the present invention ") to graphically and is equal to or higher than four comparative example films (being labeled as " comparative example 1 ", " comparative example 2 ", " comparative example 3 " and " comparative example 4 ") at 70 DEG C to the paper adhesion strength under the laminated temperature within the scope of 100 DEG C.
Claims (15)
1. a multilayer film, comprises:
A. top layer, described top layer comprise fusing point 50 DEG C within the scope of 89 DEG C through acid anhydrides and/or carboxylic acid functionalized ethylene/alpha-olefin interpolymers, wherein said acid anhydrides or carboxylic acid functional exist with the amount of 0.02 percentage by weight of polythylene resin to 0.3 percentage by weight; With
B. substrate layer, described substrate layer comprises the resin being selected from the group be made up of polypropylene or PET.
2. film according to claim 1, the thickness on wherein said top layer at 3 microns in 50 micrometer ranges.
3. film according to claim 1, the thickness on wherein said top layer at 4 microns in 12 micrometer ranges.
4. film according to claim 1, the thickness on wherein said top layer at 10 microns in 30 micrometer ranges.
5. film according to claim 1, comprises one or more additional layer further.
6. film according to claim 5, wherein said film comprises the priming coat between described substrate layer and described top layer.
7. film according to claim 1, wherein additional layer is barrier layer.
8. film according to claim 1, wherein said substrate layer is biaxially oriented.
9. film according to claim 1, the wherein said functional group containing acid anhydrides and/or carboxylic acid is maleic anhydride.
10. film according to claim 9, wherein said maleic anhydride graft type polythylene resin has 50 DEG C to the fusing point within the scope of 89 DEG C
11. films according to claim 1, the thickness of wherein said substrate layer at 10 microns in 50 micrometer ranges.
12. films according to claim 1, the thickness of wherein said substrate layer at 10 microns in 20 micrometer ranges.
13. films according to claim 1, wherein said film has 10 microns to the general thickness in 100 micrometer ranges.
14. films according to claim 1, wherein said top layer has been carried out surface treatment by corona, flame or plasma method and has been had the surface tension being more than or equal to 36 dyne (dynes).
15. 1 kinds of thermosphere mould assembly paper structures, comprise:
A. multilayer film according to claim 1;
B. paper substrates.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/072826 WO2014146237A1 (en) | 2013-03-18 | 2013-03-18 | Film composition for paper thermal lamination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105008129A true CN105008129A (en) | 2015-10-28 |
| CN105008129B CN105008129B (en) | 2018-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380074211.3A Active CN105008129B (en) | 2013-03-18 | 2013-03-18 | Film composition used in paper hot laminating |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US20150375482A1 (en) |
| EP (1) | EP2976219B1 (en) |
| JP (1) | JP6207714B2 (en) |
| CN (1) | CN105008129B (en) |
| TW (1) | TWI631015B (en) |
| WO (1) | WO2014146237A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6207714B2 (en) | 2013-03-18 | 2017-10-04 | ダウ グローバル テクノロジーズ エルエルシー | Film composition for paper thermal lamination |
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-
2013
- 2013-03-18 JP JP2016503505A patent/JP6207714B2/en active Active
- 2013-03-18 WO PCT/CN2013/072826 patent/WO2014146237A1/en active Application Filing
- 2013-03-18 US US14/759,792 patent/US20150375482A1/en not_active Abandoned
- 2013-03-18 CN CN201380074211.3A patent/CN105008129B/en active Active
- 2013-03-18 EP EP13879142.1A patent/EP2976219B1/en active Active
-
2014
- 2014-03-17 TW TW103109935A patent/TWI631015B/en active
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2019
- 2019-11-15 US US16/684,798 patent/US11123964B2/en active Active
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| CN101084116A (en) * | 2004-12-23 | 2007-12-05 | 艾利丹尼森公司 | Heat shrink films and articles encapsulated therein |
| CN101148106A (en) * | 2006-12-08 | 2008-03-26 | 广东德冠包装材料有限公司 | Paper plastic glue-free composite bidirectional stretching polypropylene film and its preparation method |
| CN102152581A (en) * | 2009-12-31 | 2011-08-17 | 广东德冠薄膜新材料股份有限公司 | Paper and plastic combined polyolefin film |
| EP2559747A1 (en) * | 2010-04-16 | 2013-02-20 | Kaneka Corporation | Adhesive resin composition and molded products |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150375482A1 (en) | 2015-12-31 |
| US11123964B2 (en) | 2021-09-21 |
| TWI631015B (en) | 2018-08-01 |
| CN105008129B (en) | 2018-10-09 |
| EP2976219B1 (en) | 2019-09-04 |
| TW201446515A (en) | 2014-12-16 |
| EP2976219A1 (en) | 2016-01-27 |
| US20200079062A1 (en) | 2020-03-12 |
| JP6207714B2 (en) | 2017-10-04 |
| WO2014146237A1 (en) | 2014-09-25 |
| EP2976219A4 (en) | 2016-10-19 |
| JP2016522758A (en) | 2016-08-04 |
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